When talking about what suit to wear for work, the first question is “What COLOR” since that’s the first thing you will see before getting closer for details.
In the past, most of the people wear black suits. Black is the most classic and safe option. Yet in recent decade, workplace accept more color options.
For formal office like banking/ finance sector, law firm, accounting firm; besides black, navy blue and charcoal grey will be some other good options. Medium to dark shades of color are your good choice. Pattern-wise, solid color or some subtle tone-on-tone (e.g. herringbone) will be good enough.
For regular business workplace, some medium – light grey, greyish-blue in solid or stripes are acceptable. If office has casual wear Friday, khaki color tops/ pants, bright/ ocean blue, some checks pattern can be considered too.